Welcome LeeTl !

It might interest you to look at my xml also on projectile motion. There is much to be learn in this forum. enjoy yourself!

http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=745.msg2801#msg2801[img]http://www.phy.ntnu.edu.tw/ntnujava/index.php?action=dlattach;topic=745.0;attach=282;image[/img]